What Is Aircraft Speed Tape?
The silver tape you've seen on a plane's wing isn't duct tape. Here's what aircraft speed tape actually is, how it's regulated, what the data sheets actually say, what it costs, and which of the two aerospace grades to buy.
Aircraft speed tape is a heavy-duty, dead-soft aluminum pressure-sensitive tape used for temporary, non-structural repairs on aircraft. It looks a bit like duct tape, which is why passengers sometimes do a double-take when they spot it on a wing or fairing — but it is an entirely different, aerospace-engineered material. The aluminum backing gives it durability, heat reflection and a moisture barrier; the acrylic adhesive bonds to metal, plastic and composite surfaces. The name is industry shorthand for where the tape gets used rather than a rated property — neither manufacturer publishes an airspeed figure, as the comparison below shows.
Looking for the real thing — aerospace-grade speed tape, not hardware-store foil?
Shop Speed Tape →Speed tape is not duct tape, and it is not a structural repair. It is a technician-applied material for temporary, minor, non-structural work only, and every application is governed by the aircraft's Structural Repair Manual, an Engineering Order or the maintenance manual. It is never a substitute for an approved structural repair.
"Speed tape" is also not a controlled specification. It is an industry nickname, not a standard you can order to. What you can order to is the material spec — most commonly SAE AMS-T-23397B — plus whatever the drawing or manual names.
What aircraft speed tape is used for
Licensed maintenance technicians use speed tape for quick, temporary fixes to non-critical areas, always under an approved procedure. Common uses include:
Covering minor surface scratches, paint defects or non-structural skin gaps to protect them from the elements until scheduled maintenance.
Sealing edges of fairings and access panels, and covering fastener lines to maintain airflow and keep moisture out.
Masking during chemical paint stripping, as an underlay for PMB blast tape, and protecting canopies and window surfaces through stripping operations.
Acting as a heat shield to minimize heat transfer and hot spots, thanks to the reflective aluminum foil backing.
Both data sheets list masking and paint-stripping work ahead of anything else, which is a fair reflection of where most of this tape actually gets used. Outside aviation the same foil tapes show up in motorsport and in industrial duct sealing — but the aerospace grade is what belongs on an aircraft.
Is speed tape safe? How it's regulated
It can be, when the correct material is applied by qualified personnel in an approved role. Speed tape is a recognized part of aircraft maintenance rather than an improvised fix, and temporary repairs to non-structural components are a normal, documented part of a maintenance program. What makes a given application legitimate is not the tape itself but the paperwork behind it: the operator's approved procedures, and the Structural Repair Manual, Engineering Order or maintenance manual that sets out where, how large, and for how long.
The limits are the whole point. In December 2002 the FAA proposed an $805,000 civil penalty against United Airlines, alleging the carrier had patched holes in the spoilers of three Boeing 757s with tape and flown them roughly 200 times before permanent repairs were made — the agency contending the holes were either too large or too close to critical areas on the spoiler. United said it would contest the penalty, and the public reporting does not record how it was finally resolved, or which tape was used. The point stands either way: the material is only as compliant as the limits it is applied within, and that judgment belongs to a qualified technician working to the manual.
What the data sheets actually say
A lot of what circulates about speed tape — a 600 mph rating, a −65°F to 300°F range — is industry folklore that does not appear on any data sheet we hold. Here is what the two manufacturers actually publish for the two grades we stock, with the test method beside each figure.
| Property | Polyken 345SW | Intertape ALF300 |
|---|---|---|
| Backing | 3.0 mil (0.076 mm) dead-soft aluminum foil | 3.0 mil dead-soft aluminum foil |
| Total thickness | 5.0 mil (0.127 mm) — PSTC-133 | 4.7 mil (0.12 mm) — PSTC-133 |
| Adhesive | Acrylic, single-coated | Acrylic |
| Liner | None (self-wound) | None (self-wound) |
| Adhesion to steel | 68 oz/in (7.44 N/cm) — PSTC-101 | 55 oz/in (15 N/25 mm) — PSTC-101 |
| Tensile strength | 26 lb/in (45.53 N/cm) — PSTC-131 | 29 lb/in (127 N/25 mm) — PSTC-131 |
| Elongation at break | 3% — PSTC-131 | 7.5% — PSTC-131 |
| Operating temperature | −40 to 350°F (−40 to 177°C) | −30 to 325°F (−34 to 163°C) |
| Min. application temp. | Not stated | 35°F |
| Airspeed rating | Not stated | Not stated |
| SAE AMS-T-23397B | ✓ | ✓ |
| FAR 25.853(a) | ✓ | Not listed on the data sheet |
| UL 723 | Tested in accordance with | ✓ UL-723 |
| Boeing | — | BAC D6-34501 Rev. H |
| Military / government | L-T-80B (supersedes MIL-T-23397A & B) | USAF T.O. 1-1-8; NSNs for seven widths |
| Gulfstream | GAMPS 4002 · GAT100BC | — |
| Shelf life | 24 months from date of manufacture | 24 months from date of purchase |
| Price from | $28.99 — 1″ × 60 yd roll | $28.99 — 1″ × 60 yd roll |
| Data sheet | TDS (PDF) ↓ | TDS (PDF) ↓ |
Sources: Polyken 345SW technical data sheet and product information sheet, Berry Global, sheet dated 11 April 2018; Intertape ALF300 technical data sheet, IPG, effective 06/26. Both manufacturers state these are nominal or typical values based on standard test methods and are not to be treated as specifications. The two sheets also phrase UL 723 differently: the 345SW sheet states the tape is tested in accordance with UL 723, while the ALF300 sheet lists UL-723 under Government Compliance. A test reference and a listing are not the same thing, and neither is stated here as more than the manufacturer states it. Prices were the listed prices on 29 September 2026.
The most useful correction: both tapes use the same 3.0 mil foil. The difference is in the adhesive, not the metal — 5.0 mil total against 4.7 mil. Anyone choosing between them on "5-mil versus 3-mil" is comparing the wrong numbers.
How much does aircraft speed tape cost?
Price depends on grade, roll width and whether you buy single rolls, multi-packs or cases. Genuine aerospace foil tape is more affordable than most people expect for a certified aircraft material.
Polyken 345SW and Intertape ALF300 are priced identically at the roll level: $28.99 for a 1″ × 60 yd roll and $58.99 for 2″ × 60 yd. Three-roll and eight-roll packs and full cases bring the per-roll price down. A Certificate of Conformance is included with every order where available. Comparing against 3M? See our Polyken 345SW vs 3M 425 comparison for a side-by-side on price and specifications.
What grade of speed tape should you buy?
Ordinary hardware-store foil tape is not aircraft speed tape. Genuine aerospace foil tape is qualified to recognized specifications, and the paperwork — the spec qualification and a Certificate of Conformance — is what separates it from a roll off a shelf. Both grades below are qualified to SAE AMS-T-23397B; beyond that they hold different approvals, and that, not thickness, is usually what decides it.
Check which approval your job needs before you choose. The 345SW is the one that carries FAR 25.853(a) flammability and the Gulfstream approvals. The ALF300 is the one that carries Boeing BAC D6-34501 Rev. H and USAF T.O. 1-1-8 and has NSNs assigned. Neither is a substitute for the other where a drawing names a specific approval.
Take the 345SW if the job needs FAR 25.853(a) flammability, a Gulfstream callout, the higher 68 oz/in adhesion or the wider −40 to 350°F range. Take the ALF300 if the job names Boeing BAC D6-34501 or USAF T.O. 1-1-8, if you are ordering against an NSN, or if you want the higher 7.5% elongation for stretching around a tight contour. Where the drawing does not name an approval, choose against the applicable maintenance requirements and the current product data sheet rather than on price. The two differ in adhesion, elongation and temperature range, and which of those matters is a decision for the application.
Want the full spec breakdown — types, the MIL/L-T history, and a side-by-side comparison?
AMS-T-23397B Guide →Frequently asked questions
What is aircraft speed tape?
Aircraft speed tape is a heavy-duty, dead-soft aluminum pressure-sensitive tape used for temporary, non-structural repairs on aircraft. The name is industry shorthand rather than a rated property: neither of the data sheets we hold publishes an airspeed figure. It is engineered for aviation and is a far stronger and more specialized material than household duct tape.
How much does aircraft speed tape cost?
Our two stocked aerospace foil tapes, Polyken 345SW and Intertape ALF300, are both $28.99 for a 1 inch by 60 yard roll and $58.99 for a 2 inch roll, with free standard shipping within the United States and no minimum order. Three-roll and eight-roll packs and full cases bring the per-roll price down. Wider rolls and industrial or HVAC foil grades are priced separately.
Is speed tape safe to use on a plane?
It can be safe when the correct aerospace-grade material is applied by qualified personnel under the aircraft's approved maintenance procedure. It is used only for temporary, minor repairs to non-structural components, and every application is governed by the aircraft's structural repair manual, an engineering order or the maintenance manual, which set out where it may be used, over what size of defect, and for how long. It is never used for structural or critical repairs.
Is speed tape just expensive duct tape?
No. Although it can resemble duct tape, speed tape is an aluminum-foil aerospace material with a far stronger adhesive and a much wider temperature range. The grades we stock are qualified to SAE AMS-T-23397B and carry named OEM and government approvals such as FAR 25.853(a), Boeing BAC D6-34501 Rev. H, USAF T.O. 1-1-8, L-T-80B and Gulfstream GAMPS 4002 — none of which ordinary duct tape holds.
How hot and how cold can speed tape go?
It depends on the product, and you should work from its data sheet rather than a general figure. The Polyken 345SW is rated from minus 40 to 350 degrees Fahrenheit and the Intertape ALF300 from minus 30 to 325 degrees Fahrenheit. Neither manufacturer publishes an airspeed rating, so figures such as 600 mph that circulate online are not values you will find on either data sheet.
What spec should aircraft speed tape meet?
Aerospace foil tape is most commonly qualified to SAE AMS-T-23397B, the aluminum-foil pressure-sensitive tape specification, which supersedes MIL-T-23397A and B. Both the Polyken 345SW and the Intertape ALF300 meet it. Beyond that they differ. The 345SW sheet adds FAR 25.853(a), L-T-80B and Gulfstream GAMPS 4002 and GAT100BC, and states that the tape is tested in accordance with UL 723. The ALF300 sheet lists Boeing BAC D6-34501 Rev. H, USAF T.O. 1-1-8 and UL-723 under government compliance. The wording matters: a statement that a product was tested in accordance with a standard is not the same as a listing or a qualification to it, and the two sheets phrase UL 723 differently. Check which approval your drawing or manual names. See our AMS-T-23397B guide for the full breakdown.
Which should I buy — Polyken 345SW or Intertape ALF300?
Both are self-wound aluminum foil tapes on the same 3.0 mil foil, both are qualified to SAE AMS-T-23397B, and both cost the same per roll. The 345SW is built up to 5.0 mil total, grips harder at 68 ounces per inch and runs from minus 40 to 350 degrees Fahrenheit, and it is the one that carries FAR 25.853(a) and the Gulfstream approvals. The ALF300 is 4.7 mil total, stretches further at 7.5 percent elongation, and is the one that carries Boeing BAC D6-34501 Rev. H, USAF T.O. 1-1-8 and assigned NSNs. If your drawing names an approval, that decides it. If it does not, choose against the applicable maintenance requirements and the current product data sheet — the two differ in adhesion, elongation and temperature range.
Does aircraft speed tape remove cleanly?
The Polyken 345SW data sheet states that its acrylic adhesive permits clean, easy removal with no residue. The Intertape ALF300 data sheet does not make a removal claim. As with any pressure-sensitive tape, how cleanly it comes away depends on the surface, the temperature and how long it has been in place, so test on an inconspicuous area first if the finish underneath matters.
Need aerospace-grade speed tape?
We stock SAE AMS-T-23397B aluminum foil speed tape from $28.99 per roll, with free standard shipping within the US and a Certificate of Conformance included with every order where available. Tell us the width, quantity and the approval your drawing names, and we'll confirm stock, lead time and pricing.
Shop Aircraft Speed Tape →This guide is provided for general informational purposes. Aircraft speed tape is a regulated material; its use on any aircraft must follow the applicable structural repair manual, engineering order, maintenance manual and the operator's approved procedures. "Speed tape" is a general industry term and not a single controlled specification. Performance figures are drawn from the current manufacturer technical data sheets, which are the controlling source and which state that these are nominal or typical values, not specifications. Prices shown were the listed prices on 29 September 2026 and may change; confirm the live price and current availability on each product page. A cross-reference identifies a potentially matching product and does not constitute a substitution approval. Always verify that the tape and its application are approved for the specific task against the controlling drawing and the current manufacturer data sheet. SAE and AMS are trademarks of SAE International; Boeing and BAC are trademarks of The Boeing Company; Gulfstream, GAMPS and GAT are trademarks of Gulfstream Aerospace Corporation; other marks belong to their respective owners.